NF C90-730-3-2003 钎焊电子组件的工艺要求.第3部分:通孔安装组件

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【英文标准名称】:Paperandboard-Determinationoftensileproperties-Part2:constantrateofelongationmethod(20mm/min).
【原文标准名称】:纸和纸板.拉伸性能的测定.第2部分:延伸方法的恒定速率(20mm/min)
【标准号】:NFQ03-002-2-2009
【标准状态】:现行
【国别】:法国
【发布日期】:2009-04-01
【实施或试行日期】:2009-04-18
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:纸板;定义;测定;延伸;断裂伸长;实验室测试;负荷;材料测试;数学计算;纸;性能;抽样方法;强度性能;拉伸强度;拉伸测试;抗拉试验;试验设备;测试;速度
【英文主题词】:Board(paper);Definitions;Determination;Elongation;Elongationatfracture;Laboratorytesting;Loading;Materialstesting;Mathematicalcalculations;Paper;Properties;Samplingmethods;Strengthproperties;Tensilestrength;Tensiletesting;Tensiletests;Testequipment;Testing;Velocity
【摘要】:
【中国标准分类号】:Y30
【国际标准分类号】:85_060
【页数】:20P;A4
【正文语种】:其他


【英文标准名称】:StandardTestMethodforLengthandLengthDistributionofManufacturedStapleFibers(Single-FiberTest)
【原文标准名称】:人造短纤维的长度和长度分布用标准试验方法(单纤维试验)
【标准号】:ASTMD5103-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D13.58
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:纤维长度;人造纤维;短纤维;试验方法;纺织纤维
【英文主题词】:length;textilefibers
【摘要】:Thistestmethodisusedforresearch,development,qualitycontrol,productspecifications,andmaybeusedforacceptancetestingofcommercialshipmentsoftextilefibers.However,cautionisadvisedsinceinformationonbetween-laboratoryprecisionislacking.Comparativetestsasdirectedin5.1.1maybeadvisable.5.1.1Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestsshouldbeperformedtodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,testsamplesthatareashomogenousaspossible,drawnfromthematerialfromwhichthedisparatetestresultswereobtained,andrandomlyassignedinequalnumberstoeachlaboratoryfortesting.Thetestresultsfromthetwolaboratoriesshouldbecomparedusingastatisticaltestforupaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifabiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsforthatmaterialmustbeadjustedinconsiderationoftheknownbias.Thistestmethodprovidesobjectivemeasurementsfordeterminingtheaveragefiberlengthandlengthdistributioninasampleoffiber.Thestaplelengthdiagramofafibersamplecanbeusedtodeterminetherelativenumberoffibersaboveandbelowaspecifiedlength.Ifafiberistoolong,itwillnotprocesswellinspinning,andifthereisapreponderanceofshortfibers,theyarnmighthavelowerthannormalbreakingstrength.1.1Thistestmethodcoversthedeterminationofaveragestaplelengthandstaplelengthdistributionofbothmanufacturedandnaturalfibersbymanuallymeasuringsinglefiberlengths.Thistestmethodisalsousedtomeasurethelengthoffibersremovedfromastapleyarn,butsuchameasurementmaynotrepresentthefiber''sstaplelength,asmanufactured.1.2Becausethistestmethodrequiresmeasuringthelengthofonly50fibers,itisnotsuitableforuseindeterminingthenumberoflongfibersthatoccurinfrequentlyinasample.Note18212;Fordeterminationforoverlengthfibers,refertoTestMethodD3513.Note28212;Formethodscoveringthedeterminationoftheaveragelengthandlengthdistributionofnaturalfibers,refertothefollowingmethods:forcotton,TestMethodD1440,andTestMethodD1447,forwool,TestMethodD519,TestMethodD1234,andTestMethodD1575.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W52
【国际标准分类号】:59_060_20
【页数】:4P.;A4
【正文语种】: